Improved mosquito-bar for windows



@uitrit 'ta'trs atrnt @frn Letters Patent No. 78,948, dated June 16,1868.

IMPROVBD -liOSQUI'lO-BAR IOR WINDOWS.

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Bc it known that I, ANDREW C. FLINT, of Boston, in the county ofSuffolk, and State of Massachusetts, have invented certain new anduseful Improvements in Mosquito-Bars for Windows; and I do herebydeclaro that the following,'taken in connection with the drawings whichaccoinpany and form part of this specification, is a description of myinvention suilicient to enable those skilled in the art to practise it.

This invention is designed for use in windows'to prevent ingress ofinsects, it having certain peculiari-- ties of construction, by whichthe bar is easily and quickly attached innnd detached from position, andis adapted to openings of different widths within a reasonable limit orrange, and is made to fit closely against `the parts of a window-sash,and it is in said peculiarities oi` the detail of construction that myinvention consists.

In the drawings# Figurel shows in elevation a mosquito-bar embodying myinvention, while Figure 2 shows thc same in plan.

The bar is made of two uprights, a. a, connected at top and bottoni byelastic bands b c, the netting being confined at its edges to theuprights and to the said bands by a sewing-machine, or by hand, whilstthe elastic bands are stretched to the width of' the netting, and thenetting is in a flat or unpuckered condition. The stitches are thusclose'together, and there are no packers in the netting until the rubberis allowed to contract.

The pieces (Z represent the strips of the window-frame which hold thesash in place. In these strips are screws seen in dotted lines at c e,projecting inwardly toward each other from the opposite strips, andparallel with the plane of thc window-glass. The uprights a t haveformed in their outer edges dove-tailed grooves, of

`suchgshape as to fit over the heads of the screws at e c, and, by sodoing, hold the uprights in their places against the strips LZ d. i

The inner edges oi' the uprights a a are rebated, and strips,ff, arcfitted to the rebates,.and lare heldin place by the screws g, the stripsff and screws g forming clamps, by which the vertical edges of thenetting 7L are confined. 4

In` the joints between the pieecsj'and a, vertical holes are bored,which receive wires, around which the elastic bands are turned, and thejoints between said piecesf and a, at the ends oi` said pieces,'areenlarged to receive the thickness ofthe bands, which is considerablygreater than the thickness of the netting.

The wires t', beingipasscd into the 'nights of the elastic bands, theyarc prevented from'being pulled out of position by strain exerted in adirection to elongate the width ofthe bar.

The lower band, e, is iixverl with reference to the uprights, so that aportion of` its width lprojects below their lower ends, and the portionso projecting lies or laps upon the horizontal strip of thewindow-'frame, and thus prevents the existence of an opening or crack atthat location through which insects can pass. i

The upper band, b, is folded through the centre of its width at the endswhere it is `secured to the uprights. This causes said band to assume ahorizontal position, so that its edge nearest the glass pushes towardthe sash another band, m, which has its width vertically, like the widthof' the lower band c. f

Thus the band m is forced by band b against the horizontal sash-liar, toprevent the existeneeat that location of a crack through which insectscould pass.- This provision of the two upper bands m and b at the iippcrpart of the bar, one having its width vertical and the other horizontal,is specially useful where the horizontal bars of the sash are not sowide as are the vertical bars, which construction is often found inwindow-sashes. i Y

I claim a mosquito-bar made with rigid clamping uprights and elasticbands, and with netting clamped by the uprights and stitched to theband,ssubstantially as and for the purpose described.

Also, the combination of the two elastic bands and m with the uprights,when the bands are arranged in planes at angles to cach other,substantially as and for thepurpose specified.

Also, the'projectingarrangemcnt of the lower band c with reference tothe lower ends ofthe uprights, for the purpose specified.

Also, the wires 2', in combination with the elastic bands and sockets inthe uprights, substantially as and for the purpose specified,

' AND, C. FLINT.

Witnesses:

J. B. Gnosnv, FRANCIS Gounn.

